Temperature control for radiators



E. E. MELLENIHIN.

TEMPERATURE CONTROL FOR RADIATORS.

APPLICATION FILED FEB. I0, 1921.

E. E. MELLENTHTN. TEMPERATURE CONTROL FOR RADIATORS.

FFLICATION FILED FEB-10| 1921-.

Patented Sept.

2 seins-s EDWIN E. MELLENTHIN, OF' WAUKESHA, WISCONSIN.

TEMPERATURE CONTROL FOR RADIATORS.

Specification of Letters Patent.

Patented Sept. 6, 1921.

vApplication filed February 10, 1921. Serial No. (143,942.

certain new and useful Improvements in Temperature Control for Radiators; and I do hereby declare that the following is a full, clear, and exact description thereof.

My invention refers to temperature control for water j acketed engines, and it has for its object to provide a simple, economical and effective means for maintaining approximately a uniform temperature in the water circulating system by causing a positive circulation of tempered air about the radiator parts, including the heads and water cells or channels, the air being controlled as to temperature by indirect heat from exhaust gases of the engine to thus insure maximum eiiciency in the engine under various climatic conditions, and to prevent freezing under certain conditions. lVith the'above and other minor objects in view, the invention consists in certain peculiarities of construction and combination lof parts, as are hereinafter set forth with reference to the accompanying drawings and subsequently claimed.

In the drawings,

Figure 1 re resents a side elevation of a water jacketeci) engine and its associated Vradiator having attached thereto a temperature controlling mechanism embodying the features of my invention.

Fig. 2 is an enlarged detail longitudinal sectional view of a radiator constructed 1n accordance with my invention.

Fig. 3 is an enlarged longitudinal sectional view through an air receiving drum embodying one of the features of my'invention, a compartment of the drum being arranged to envelop a standard exhaust pipe which may lead to the muii'ler through a direct discharge, and

Fig. 4 is a front elevation of the air receiving drum showing its open end equipped with a suction fan.

Referring to Fig. 2 of the drawings, the radiator is provided with a bottom head 1 and a top head 2, which heads are connected by tubes 3 that constitute water cells or channels. The u per and lower heads are incased in meta lic jackets 1 -4', which jackets are connected by jacket tubes 3 that incase the water channels 3. These jacket elements are separated from their associated parts, so as to formuninterrupted air spaces 5 5 about the heads and communicating air spaces 6 about the tube channels. The upper head is provided with an air vent 7, which communicates with the air spaces 5, as shown, and this vent may be in some instances provided with a cap (not shown), or other closure device, whereby the vent can be closed in some cases, or restricted in others. The upper head is connected to the water jacket A of the engine casing by means of a pipe B, as best shown in Fig. 1. Theradiator jacket members which form an air space about the parts of said radiator are covered by a shell 9 or insulating material, such as asbestos or the like, so as to exclude as near as possible the influence of the atmosphere upon the water circulating through the system or parts of the radiator.

The bottom head 1 is connected by an exteriorly insulated pipe 10 to the kair intake end 11 of a heating drum, the drum being provided with a rear compartment 12, which is arranged to incase a coiled section 13 of an engine exhaust pipe-13, The compartment 12 is closed at its rear end by a cap 141 through which the exhaust pipe extends, as best shown in Fig. 3. The hot air compartment 12 andthe air receiving compartment 11 are separated by a slidable valve plate 15 which may be adjusted to vary the intake area that forms a communication between the compartments and when the valve plate is adjusted, it may be locked in any predetermined position by a set screw 15, which passes through a mouth of the valve guide as shown. The front end of the drum is provided with an inwardlytapered deflector hood 16, which hood incases a fan 17 that is secured to a shaft 18 journaled in the hub of a spiderul), which spider is secured to the drum s e In this exempliiication of my invention, the opposite end of the fan shaft 18 is journaled in a bearing 20, and is secured to the engine casing and this end of the shaft carries a pulley 21, which pulley is in belt connection with a second pulley 21, but is mounted on the shaft of the standard radiator fan C. Obviously, the fan 17 can be driven at any desired speed and from any moving part of the engine other than that shown.

In operating the engine under low temperature conditions, it is desirable to maintain the water in a circulating system at a relative high temperature,` and in this instance, the valve l5 is adjusted so as to increase the inlet opening from Ythe air compartment to the heating compartment of the drumto a maximum. Under these con-V ditions, the cold air drawn into the drum compartment ll through the spider 179, by action of the same, will be forced back into the heating compartment l2 andconfined therein in more or less compact volume, whereby the exhaust gases passing through the coil 13 will heat the air to a comparatively high temperature, and as the fan continues to force air backward into the drum, the heated air will be caused to travel through the pipe 10 and'circulate about the lower headchannels and upper head of the radiator, so as to exert a heating influence upon the water contained in said radiator vto thus insure maintaining 1t at the desired temperature. The surplus air caused to travel over the radiator parts is discharged through the vvent 7.

It follows that when the atmosphere conditions are at normal winter temperature,

the valve l5 can be lowered so as to restrict the volume of vair that may pass intoI the heating end 12 of the drum. Y

In summer seasons when thel temperature is somewhat high, the valve l5 can be entirely closed and the air drawn into theiirst compartment of thedrum 11 will'be forced at normal temperature directly through the air circulating system about the parts ofthe radiator, to thus prevent the Vwater from n rising above normal to hold the temperature of the water as near as possible at a predev 1 termined degree. By controlling the air Y'circulating system positively in the manner mentioned, obviously it would be understood that the efficiency of the engine is materially increased, and in cold weather the hot air,

which is introduced about the jacketed radiator parts, willserve as a blanket to prejacketed upper and lower heads connected.

by jacket'edwaterV channels, there being an air space between the jacketedV parts and a vent for the air space; the combination of a drum having a'heating compartment in* casing. a portion of the engine exhaust pipe and yan vopen ended air intake end, a valve for regulating communication .between the air intake end and the heating Yend of the drum, a motor driven fan mounted in the air''receiving end of the drumand a pipe in communication withthe air intake end of said drum and airspace about the radiator parts, whereby air'frointhe drum at predetermined tempe'ratures `mayf be positivelyl forced about the water circulating system of the radiator.

In testimony th-atI claim the foregoing have hereunto set my hand ati Milwaukee,

in the county vof Milwaukee andv State ofV lVisconsin EDWTIN E. MEL:LENTHIN'."AV` 

